The two correct answers that best describe how the author uses more than one structure to present information in “From Barter to Bitcoin” are:
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The text uses chronology to explain how the use of currency has changed since it was first introduced.
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The author explains causes for the fluctuation of the value of money and describes how these changes affect people.
These selections indicate the author's use of a chronological approach to outline the evolution of currency and a causal approach to discuss the implications of its value changes.